Abstract

Well-defined and high-density single-walled carbon nanotube(SWNT)patterns were fabricated using a combination of photolithographic and chemical assembling processes. Unlike the patternedSWNT arrays reported thus far, these SWNTpatterned layers have high-density multilayer structures and excellent surfaceadhesion due to their direct chemical bonding to their substrates, which results in high electrical conductivity. We found that the high-density multilayerSWNTpatterns emit electrons under an applied electrical field. The electrical resistivities of the SWNT layers were found to be , with a turn-on electric field of about at an emission current density of . This technique for fabricating SWNTpatterns can be used in the production of field-emission displays and in future device integration requiring carbon nanotubes(CNTs), because it provides large-area patterning of SWNTs with high stability and uniformity.